Sinter-resistant Rh nanoparticles supported on γ-Al2O3 nanosheets as an efficient catalyst for dry reforming of methane

Nanoscale ◽  
2020 ◽  
Vol 12 (40) ◽  
pp. 20922-20932
Author(s):  
Shasha Chu ◽  
Zhengmiao Cai ◽  
Mingzhi Wang ◽  
Yanping Zheng ◽  
Yongke Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Surface Structure ◽  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Efficient Catalyst ◽  
Unique Surface

The unique surface structure of γ-Al2O3 nanosheets plays a key role in increasing the dispersion of Rh species in the catalyst and preventing it from sintering at high temperature under both oxidizing and reducing atmospheres.

scholarly journals Role of CeO2-ZrO2Support for Structural, Textural and Functional Properties of Ni-based Catalysts Active in Dry Reforming of Methane

2019 ◽  
Vol 108 ◽  
pp. 02018 ◽  
Author(s):  
Andrzej Adamski ◽  
Piotr Legutko ◽  
Katarzyna Dziadek ◽  
Ksenia Parkhomenko ◽  
Cyril Aymonier ◽  
...  
Keyword(s):  
High Temperature ◽  
Functional Properties ◽  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Methane Reforming ◽  
Temperature Reaction ◽  
Deposition Method ◽  
Wet Impregnation ◽  
High Temperature Reaction

Positive environmental and technological contexts make dry methane reforming (DMR) an extensively studied reaction. During this process two main greenhouse gases CH4and CO2can be simultaneously converted into syngas – a mixture of CO and H2. Supported-nickel is one of the most frequently applied DMR catalysts. Their activity depends mainly on Ni concentration, kind of its precursor and a deposition method. As DMR is a demanding high-temperature reaction, it requires not only an active but first a very stable catalyst. Structural, textural and functional properties of such support remain thus of crucial efficiency. Main aim of this work was to elucidate how the synthesis of CeO2-ZrO2support obtained by supercritical fluid method (i.e.at temperature of 400°C under a pressure of 25 MPa), can influence the properties of Ni-based DMR catalysts. The supports of various compositions (CeO2content from 100 to 0 %), subsequently calcined at 800°C for 6h in air have been analyzed. Nickel was deposited from nitrate(V) precursor via classical wet impregnation. The final catalysts have been characterized structurally (XRD, RS), texturally (BET, SEM) and functionally (UV/Vis-DR, XPS). Catalytic tests in dry methane reforming reaction have been performed to determine activity and stability of the synthesized samples.

CO2 Conversion by Membrane Reactors

2019 ◽  
Vol 19 (6) ◽  
pp. 3124-3134
Author(s):  
Adele Brunetti ◽  
Enrica Fontananova
Keyword(s):  
High Temperature ◽  
Membrane Reactor ◽  
Large Scale ◽  
Dry Reforming ◽  
Membrane Reactors ◽  
Dry Reforming Of Methane ◽  
Co2 Conversion ◽  
Promising Tool ◽  
Photocatalytic Reactors ◽  
Critical Overview

Membrane reactors technology represents a promising tool for the CO2 capture and reuse by conversion to valuable products. After a preliminary presentation of the fundamentals of this technology, a critical overview of the last achievements and new perspectives in the CO2 conversion by membrane reactors is given, highlighting the still existing limitations for large scale applications. Among the low temperature (≤100 °C) membrane reactor for CO2 conversion, electrochemical membrane reactors and photocatalytic reactors, represent the two mainly pursued systems and they were discussed starting from selected case studies. Dry reforming of methane and CO2 hydrogenation to methanol were selected as interesting examples of high temperature (>100 °C) membrane based conversion of CO2 to energy bearing products.

scholarly journals A new high temperature reactor for operando XAS: Application for the dry reforming of methane over Ni/ZrO2 catalyst

2018 ◽  
Vol 89 (3) ◽  
pp. 035109 ◽  
Author(s):  
Antonio Aguilar-Tapia ◽  
Samy Ould-Chikh ◽  
Eric Lahera ◽  
Alain Prat ◽  
William Delnet ◽  
...  
Keyword(s):  
High Temperature ◽  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
High Temperature Reactor ◽  
Zro2 Catalyst ◽  
Operando Xas

scholarly journals Utilization of heat from High Temperature Reactors (HTR) for dry reforming of methane

2018 ◽  
Vol 28 ◽  
pp. 01016
Author(s):  
Krzysztof Jastrząb
Keyword(s):  
Carbon Dioxide ◽  
High Temperature ◽  
Dry Reforming ◽  
Raw Material ◽  
Dry Reforming Of Methane ◽  
Optimum Conditions ◽  
Industrial Practice ◽  
Optimum Parameters ◽  
University Of Technology ◽  
Promising Solution

One of the methods for utilization of waste carbon dioxide consists in reaction of methane with carbon dioxide, referred to as dry reforming of methane. It is an intensely endothermic catalytic process that takes place at the temperature above 700°C. Reaction of methane with carbon dioxide leads to formation of synthesis gas (syngas) that is a valuable chemical raw material. The energy that is necessary for the process to take place can be sourced from High Temperature Nuclear Reactors (HTR). The completed studies comprises a series of thermodynamic calculations and made it possible to establish optimum conditions for the process and demand for energy from HTR units. The dry reforming of methane needs also a catalytic agent with appropriate activity, therefore the hydrotalcite catalyser with admixture of cerium and nickel, developed at AGH University of Technology seems to be a promising solution. Thus, the researchers from the Institute for Chemical Processing of Coal (IChPW) in Zabrze have developed a methodology for production of the powdery hydrotalcite catalyser and investigated catalytic properties of the granulate obtained. The completed experiments confirmed that the new catalyser demonstrated high activity and is suitable for the process of methane dry reforming. In addition, optimum parameters of the were process (800°C, CO2:CH4 = 3:1) were established as well. Implementation of the technology in question into industrial practice, combined with utilization of HTR heat can be a promising method for management of waste carbon dioxide and may eventually lead to mitigation of the greenhouse effect.

High-Temperature Stable Ni Nanoparticles for the Dry Reforming of Methane

ACS Catalysis ◽  
2016 ◽  
Vol 6 (10) ◽  
pp. 7238-7248 ◽  
Author(s):  
Katharina Mette ◽  
Stefanie Kühl ◽  
Andrey Tarasov ◽  
Marc G. Willinger ◽  
Jutta Kröhnert ◽  
...  
Keyword(s):  
High Temperature ◽  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Ni Nanoparticles

Dry Reforming of Methane over Nanosized Tungsten Carbide Powders Obtained by Mechanochemical and Plasma-Mechanochemical Methods

2019 ◽  
Vol 59 (11) ◽  
pp. 1256-1263
Author(s):  
R. R. Grigoryan ◽  
S. G. Aloyan ◽  
V. R. Harutyunyan ◽  
S. D. Arsentev ◽  
L. A. Tavadyan
Keyword(s):  
Tungsten Carbide ◽  
Dry Reforming ◽  
Dry Reforming Of Methane

Molybdenum and nickel-molybdenum nitride catalysts supported on MgO-Al2O3 for the dry reforming of methane

2021 ◽  
Vol 44 ◽  
pp. 101411
Author(s):  
Nicolas Abdel Karim Aramouni ◽  
Joseph Zeaiter ◽  
Witold Kwapinski ◽  
James J. Leahy ◽  
Mohammad N. Ahmad
Keyword(s):  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Molybdenum Nitride

scholarly journals The First Observation of Ni Nanoparticle Exsolution from YSZ and its Application for Dry Reforming of Methane

2021 ◽  
pp. 100021
Author(s):  
Sangwook Joo ◽  
Chaehyun Lim ◽  
Ohhun Kwon ◽  
Linjuan Zhang ◽  
Jing Zhou ◽  
...  
Keyword(s):  
Dry Reforming ◽  
Dry Reforming Of Methane
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